I already had the first version of this file. I downloaded this one, then added the (new) files found in it to my (first) version, into the maps which had the same name.
When I typed:
/plugins load palantir
It wrote out:
Unable to load: Palantir.

-----EDITED-----

I remembered unwell, it writes out:
...gs Online\Plugins\DigitalUtopia\Palantir\MainBar.lua: 124: attempt to compare string with number